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Note 3 - Loans - Carrying and Contractual Unpaid Principal Balance of PCI loans, by Acquisition (Details) - USD ($) $ in Thousands		Jun. 30, 2017	Dec. 31, 2016
PCI Loans, Unpaid Principal Balance	[1]	$ 36,014	$ 29,088
Receivables Acquired with Deteriorated Credit Quality [Member]
PCI Loans, Unpaid Principal Balance		47,705	55,548
PCI Loans, Carrying Balance		23,446	28,429
Peoples Bank of Virginia [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
PCI Loans, Unpaid Principal Balance		8,475	9,397
PCI Loans, Carrying Balance		5,063	5,576
Waccamaw Bank [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
PCI Loans, Unpaid Principal Balance		38,163	45,030
PCI Loans, Carrying Balance		17,342	21,758
Other Receivables [Member] | Receivables Acquired with Deteriorated Credit Quality [Member]
PCI Loans, Unpaid Principal Balance		1,067	1,121
PCI Loans, Carrying Balance		$ 1,041	$ 1,095
[1] Includes loans totaling $16.99 million as of March 31, 2017, and $16.89 million as of December 31, 2016, that do not meet the Company's evaluation threshold for individual impairment and are therefore collectively evaluated for impairment.

X

- Definition

The recorded balance, net of any applicable reductions (for example, unamortized accretable yield and allowance for loan losses). This relates to loans not accounted for debt securities with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 15
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82894507&loc=d3e13503-111538

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- Definition

Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(4)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524

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